Why is finally introduced in Java?

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Markandey Pathak

Software Development Trainer

finally is block which executes every time regardless exception has occurred or not. Finally is important in case you want to do some task which must be done like clean-up, db connection closure, memory de-allocation etc.
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Java Trainer

end of the code executed.
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Java Web Application Development and Aptitude Trainer

Finally block helps you specify a block of code which you would want executed no matter if an exception arises or not.
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Trainer

Java finally block is a block that is used to execute important code such as closing connection, stream etc. Java finally block is always executed whether exception is handled or not. Java finally block must be followed by try or catch block.
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Finally creates a block of code that will be executed after a try/catch block has completed and before the code following the try/catch block. The finally block will execute whether or not an exception is thrown. If an exception is thrown, the finally block will execute even if no catch statement matches...
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Finally creates a block of code that will be executed after a try/catch block has completed and before the code following the try/catch block. The finally block will execute whether or not an exception is thrown. If an exception is thrown, the finally block will execute even if no catch statement matches the exception. Besides exception handling, finally is also used in file closing and freeing up any other resources, when a method is about to return to the caller from inside try/catch block through a return statement and finally clause is executed just before methods returns. read less
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Java Technical Leader

finally block ensure that it will always execute unless a System.exit(0) statement encounters. So you can release resources in finally block. As resource are in countable numbers and costly so we have to ensure they are released irrespective of program success or failure.
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Java Trainer

Finally is introduced in Java to do the code clean up or if you wants to perform some operation irrespective of whether the code throws an Exception or not.
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Java Tutor

The finally block always executes when the try block exits. So it is introduced for the following reason: 1) To prevent resource leaks 2) To do the clean up process in this block so that it always execute.
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Senior Software Engineer

it depends on whether you can deal with the exceptions that can be raised at this point or not. If you can handle the exceptions locally you should, and it is better to handle the error as close to where it is raised as possible. If you can't handle them locally then just having a try / finally block...
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it depends on whether you can deal with the exceptions that can be raised at this point or not. If you can handle the exceptions locally you should, and it is better to handle the error as close to where it is raised as possible. If you can't handle them locally then just having a try / finally block is perfectly reasonable - assuming there's some code you need to execute regardless of whether the method succeeded or not. read less
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Senior Software Engineer

t depends on whether you can deal with the exceptions that can be raised at this point or not. If you can handle the exceptions locally you should, and it is better to handle the error as close to where it is raised as possible. If you can't handle them locally then just having a try / finally...
read more
t depends on whether you can deal with the exceptions that can be raised at this point or not. If you can handle the exceptions locally you should, and it is better to handle the error as close to where it is raised as possible. If you can't handle them locally then just having a try / finally block is perfectly reasonable - assuming there's some code you need to execute regardless of whether the method succeeded or not. read less
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public void foo( boolean a, boolean b) { if( a ) { System.out.println("A"); /* Line 5 */ } else if(a && b) /* Line 7 */ { System.out.println( "A && B"); } else /* Line 11 */ { if ( !b ) { System.out.println( "notB") ; } else { System.out.println( "ELSE" ) ; } } } A. If a is true and b is true then the output is "A && B" B. If a is true and b is false then the output is "notB" C. If a is false and b is true then the output is "ELSE" D. If a is false and b is false then the output is "ELSE"
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